Make your dorm room more comfortable with this 3-inch mattress topper made of long-lasting, effective memory foam to reduce pressure points as you sleep. Sculpted channels make this topper breathable for cool sleep, and the egg-crate design disperses your weight evenly for added comfort.Measures 3 inches thickGel channels heat away faster, keeping you at an optimum sleeping temperatureOriginally designed for NASA, this space age foam cradles your body, reducing pressure points that cause tossing and turningTemperature sensitive foam adjusts to your body temperatureEliminates motion transfer and uncomfortable pressure pointsDisperses your weight evenlyHelps rejuvenate tired muscles and eases back painMeets all flammability standards2 pound densityDimensions:Twin: 3 inches high x 37 inches wide x 72 inches longTwin XL: 3 inches high x 37.5 inches wide x 79 inches longFull: 3 inches high x 51 inches wide x 72 inches longRemove from packaging within 72 hours of receipt to maximize memory foam expansion.This product arrives very tightly packed. Unwrap and allow 48 hours for this product to return to its original shape.Being sealed in plastic packaging sometimes traps odors. After unwrapping, allow product to air for a few hours.Due to machine-cutting manufacturing processes, there may be slight variances in the dimensions of this product.Due to the nature of Memory Foam the firmness level of every item is unique. Please be advised that even similar products may produce different firmness resultsOnce opened this product is non-returnable.Topper dimensions may be slightly smaller than your mattress dimensions. Size has been designed to allow you to easily secure your fitted sheet over your new memory foam topper.